Characteristics of relationships between hydrothermal alteration and ore forming in Pha Khieng - Nam Bo, Muang Long district, Luong Nam Tha province, Lao PDR
1 Trường Đại học Mỏ - Địa chất, Việt Nam
- Received: 11st-July-2016
- Revised: 11st-Aug-2016
- Accepted: 30th-Aug-2016
- Online: 30th-Aug-2016
- Section: Geology - Mineral
The Pha Khieng - Nam Bo, a volcanic arc, is located in Sukhothai Arc terrane. Volcanism has facilitated mineralization in Pha Khieng - Nam Bo. The research area is an epithermal deposit, characterized by wall rock alteration, from non-altered to strong altered. Towards, in mineral resources exploration, the study of wall rock alteration is important. There are two alteration types in Pha Khieng - Nam Bo area such as propylitic alteration and phylic alteration. There are two mineralized structures in Pha Khieng - Nam Bo: epithermal breccia and mineral precipitate in share zone or shear containing of ore. Phylic alteration can be found around ore body and epithermal breccia of Mo-Pb-Au-AgCu. Propylitic alteration commonly sought around shear containing of ore Cu-PbMo.